Fatto matematico: 6155 is a member of the Fibonacci-type sequence starting with 2 and 5.
Trivia: 6155 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: November 6th is the day in 1995 that the Rova of Antananarivo, home of the sovereigns of Madagascar from the 16th to 19th centuries, is destroyed by fire.